Mobile communication terminal test system capable of visually recognizing communication condition and response signal

ABSTRACT

A test procedure control unit outputs control information including time setting information in order to carry out a transition test of a connection state of a mobile communication terminal of a cellular system. In accordance with the control information, a transmission/reception unit generates a plurality of test signals including predetermined messages which correspond to a plurality of cells, and vary those in accordance with a scheduled time passage to thereby transmit those to the mobile communication terminal and receive response signals including predetermined messages from the mobile communication terminal. A reception measurement unit measures time domain waveforms of the response signals, and a message log acquiring unit acquires and stores messages and radio-communication time information when the transmission/reception unit and the mobile communication terminal exchange the respective predetermined messages. A display control unit causes to display graphs indicating measured results of the time domain waveforms and a predetermined number of radio-communication markers indicating points in radio-communication time which correspond to the radio-communication time information by a graphic display capable of simultaneously comparing at both sides of the same time base on a display unit.

TECHNICAL FIELD

The present invention relates to a test system for a mobilecommunication terminal having a system simulator function capable ofcommunication connection with a mobile communication terminal, the testsystem testing, by means of a mobile communication terminal of acellular system which moves among cells (units of service areas ofrespective base stations), whether or not the connection state of themobile communication terminal appropriately transits between the cellsso as to correspond to a movement of the mobile communication terminalbetween the cells. In particular, the invention relates to a test systemfor a mobile communication terminal using a technology in which anoperator can visually recognize the radio-communication state in aconnection transition test for switching a mobile communication terminalwhich is a test object to being in a receiving state by being made tosimulate a transition between cells, and a response signal from themobile communication terminal.

BACKGROUND ART

Conventionally, for example, a cellular system has been known as one ofcommunication systems using a mobile communication terminal such as acar cellular phone or a mobile cellular phone.

FIG. 4 is a diagram for explaining a relationship among cells (serviceareas) and base stations in such a cellular system.

Namely, as shown in FIG. 4, for example, in a communication system usinga mobile communication terminal such as a car cellular phone or a mobilecellular phone, a position of the mobile communication terminal 1 isregistered as a cellular system in the corresponding to base stations11, 12, 13, 14, . . . when the mobile communication terminal comes intoone of cells 21, 22, 23, 24, . . . which are service areas called cells,respectively, so that respective base stations 11, 12, 13, 14, . . .enable the mobile communication terminal 1 to carry out communicationwith a desired opposite party.

For example, as shown by broken line arrow A in FIG. 4, when the mobilecommunication terminal moves from the cell 21 to the cell 22,communication services can be received from the double base stations 11and 12 of the cell 21 and the cell 22. In this case, the mobilecommunication terminal can use an incoming radio wave whose power isstronger from the cell 21 or the cell 22 of one of the base station 11and the base station 12, or incoming radio waves from the both of thecell 21 and the cell 22.

In this case, when the mobile communication terminal moves from the cell21 to the cell 22 as shown by the above-described arrow A, the mobilecommunication terminal automatically switches the connection state fromthe base station 11 to the base station 12 (hereinafter, called “atransition of the connection state”).

Accordingly, at a manufacturer of mobile communication terminals, it isnecessary to execute a connection transition test for testing whether ornot a transition of the connection state is correctly executed in themobile communication terminal, in advance, before shipping the mobilecommunication terminal.

In such a connection transition test, a method is used in which theposition thereof is fixed without moving the mobile communicationterminal itself, a plurality of test signals corresponding to the cells21, 22, 23, 24, . . . are successively generated at the test systemside, and simulated communication with the mobile communication terminalis made by means of a protocol in accordance with the communicationsystem, thereby testing a transition of the connection state of themobile communication terminal.

Namely, a system simulator is configured on the test system side, andthe system simulator makes communication with the mobile communicationterminal, thereby carrying out a connection transition test with respectto the mobile communication terminal.

As a method for testing a mobile communication terminal in such acommunication system, for example, there is a radio resource management(RRM) test in accordance with the regulations described in non-Patentdocument 1 (3GPP TS 34. 121, V5. 4. 0, June 2004, 3GPP OrganizationalPartners [ARIB, ATIS, CCSA, ETSI, TTA, TTC], France, Contents No.34-148, 184-212 [pp1-63]). To put it simply, this RRM test is to carryout a connection test with a base station or a procedure test withrespect to a mobile communication terminal.

RRM tests include a test relating to a detecting time of a random accesschannel (RACH).

Note that as a RACH receiver for receiving a preamble part and a messagepart on the RACH, or the like, a receiver disclosed in Patent document 1(Jpn. Pat. Appln. KOKAI Publication No. 2002-217866) has been known.Then, the above-described test relating to a detecting time of a RACHis, in short, carried out as follows.

Namely, in FIG. 4, when the mobile communication terminal transmits arequest (preamble part) to the base station 12 in order for the mobilecommunication terminal to make a transition of the receiving state froma state of receiving the cell 21 to the cell 22, the base station 12responds to this request while raising transmitting power in the cell22.

Then, the base station 12 transmits a response signal, and thereafter,waits for a response (message part) from the mobile communicationterminal at a predetermined timing.

Accordingly, the above test relating to a detecting time of a RACH iscarried out by examining whether or not a time in which the response(message part) from the mobile communication terminal is detected at apredetermined timing is within a predetermined detecting time.

FIG. 5 is a functional block diagram showing a configuration of aconventional test system for carrying out the RRM test and the testrelating to a detecting time of a RACH therein.

In FIG. 5, a transmission/reception unit 3 has functions of respectivetransmitters/receivers 3 a, 3 b, 3 c, 3 d, . . . which correspond to thecells 21, 22, 23, 24, . . . in FIG. 4.

Further, the functions of the respective transmitters/receivers 3 a, 3b, 3 c, 3 d, . . . naturally include a function of making communicationconnection by exchanging messages necessary for a predetermined protocolwith a mobile communication terminal (user equipment [UE]) 1 in the sameway as in the base stations 11, 12, 13, 14, . . . in FIG. 4.

The transmission/reception unit 3 transmits predetermined test signalsto the mobile communication terminal (UE) 1 via a connection unit 2 bythe functions of the respective transmitters/receivers 3 a, 3 b, 3 c, 3d, . . . , and receives a response signal transmitted from the mobilecommunication terminal (UE) 1.

The reception measurement unit 4 has a function of carrying out a testfor confirming a transition of the connection state of the mobilecommunication terminal (UE) 1 by analyzing and measuring a responsesignal transmitted from the mobile communication terminal (UE) 1 due tothe communication connection between the transmission/reception unit 3and the mobile communication terminal (UE) 1.

Note that the transmission/reception unit 3 and the receptionmeasurement unit 4 are configured to operate synchronously.

Further, the reception measurement unit 4 has a function of timemeasurement or the like.

Then, because the mobile communication terminal (UE) 1 carries outtransmission and reception by a radio propagation signal with thetransmission/reception unit 3, the reception measurement unit 4 isconfigured so as to have incorporated therein a spectrum analyzer or thelike which can measure the spectrum, the band, power, and the likethereof in order to test the characteristic of the propagation signal ata radio frequency domain.

The time measurement at the reception measurement unit 4 is carried outby receiving a response signal from the mobile communication terminal(UE) 1 in response to the test signal from the transmission/receptionunit 3 at the reception measurement unit 4, and by detecting thereception time and measuring the time.

For example, the reception measurement unit 4 converts a frequency of areceived signal from the mobile communication terminal (UE) 1 withrespect to a test signal from the transmission/reception unit 3, into anintermediate frequency by the built-in spectrum analyzer, and sweepstime at the intermediate frequency. In this manner, the receptionmeasurement unit 4 carries out measurement due to a time domain in thesame way as an oscilloscope, thereby measuring time.

As described above, the transmission/reception unit 3 and the receptionmeasurement unit 4 have both of the system simulator function and themeasurement function (test function).

In the following description, the transmission/reception unit 3 and thereception measurement unit 4 may be collectively called a systemsimulator in some cases.

Note that the connection unit 2 may connect the mobile communicationterminal (UE) 1 and the system simulator (the transmission/receptionunit 3 and the reception measurement unit 4) interactively with a cable,or may connect them via an antenna.

A test procedure control unit 5 has a time setting unit 5 a, andcontrols the system simulator (the transmission/reception unit 3 and thereception measurement unit 4) by outputting control informationincluding time setting information in accordance with the regulation ofthe connection test in the above-described communication system, forexample, a procedure by which the RRM test of W-CDMA and the testrelating to a detecting time of a RACH therein as described above arecarried out.

In particular, in the communication system as described above, there isregulated in the regulation described above that, when the mobilecommunication terminal (UE) 1 moves among the cells 21, 22, 23, 24, . .. , the mobile communication terminal (UE) 1 makes a transition so as toreceive with a predetermined quality by completing reception switchingand registration within a predetermined time passage. Therefore, themobile communication terminal (UE) 1 must satisfy these sequentialoperations.

Accordingly, the test procedure control unit 5 has a predetermined testprocedure for testing whether or not the sequential operations inaccordance with the regulation as described above are satisfied withrespect to the mobile communication terminal (UE) 1 via the systemsimulator (the transmission/reception unit 3 and the receptionmeasurement unit 4).

When the system simulator (the transmission/reception unit 3 and thereception measurement unit 4) is operating as set at the time settingunit 5 a of the test procedure control unit 5, a determining unit 6determines whether or not the transition of the connection state amongthe cells 21, 22, 23, 24, and . . . , in the mobile communicationterminal (UE) 1 is carried out within a predetermined time.

This determining unit 6 appropriately processes and determines theresult of the above-described determination, and outputs the final testresult as numeric data to a display unit 7 or the like.

In the test system for the mobile communication terminal according tothe prior art, a display on the display unit 7 depends on the numericdisplay by only numeric data in accordance with each measurement item.

Then, in the prior art, the display on the display unit 7 is carried outso as to individually display numeric data of time measurement inaccordance with each measurement item, determined results, or timewaveform display.

Accordingly, in the prior art, there is the problem that, when themobile communication terminal (UE) 1 responds abnormally at a timedifferent from a normal time, or when there is abnormality in numericdata, it is hard for an operator to grasp a timing relationship betweenexchanging messages and signal waveforms between the mobilecommunication terminal (UE) (1) and the transmission/reception unit 3 soas to be visually recognizable.

DISCLOSURE OF INVENTION

An object of the present invention is to provide a test system for amobile communication terminal in which, in a connection transition testby a system simulator of a mobile communication terminal, a responsestate of a message and a signal waveform at the time of the test arecapable of simultaneously comparing with both sides of the same timebase while being displayed in a graphic display, so that an operator cangrasp those so as to be visually recognizable.

In order to achieve the above object, according to a first aspect of thepresent invention, there is provided a test system for a mobilecommunication terminal, comprising:

a test procedure control unit (5) which possesses a procedure forcarrying out a transition test for a connection state of a mobilecommunication terminal (UE 1) of a cellular system, and which outputscontrol information including time setting information in accordancewith the procedure;

a transmission/reception unit (3) which, in accordance with the controlinformation from the test procedure control unit, generates a pluralityof test signals including predetermined messages corresponding to aplurality of cells (21, 22, 23, 24, . . . ) in the cellular system, andwhich varies the plurality of test signals in accordance with ascheduled time passage to thereby transmit the signals to the mobilecommunication terminal and receive response signals includingpredetermined messages from the mobile communication terminal;

a reception measurement unit (4) which measures time domain waveforms ofthe response signals including the predetermined messages from themobile communication terminal;

a message log acquiring unit (9) which acquires and stores messages andradio-communication time information when the transmission/receptionunit and the mobile communication terminal exchange the respectivepredetermined messages;

a display unit (7) which displays measured results of the time domainwaveforms from the reception measurement unit and theradio-communication time information from the message log acquiringunit; and

a display control unit (8) which carries out processing for receivingthe measured results of the time domain waveforms from the receptionmeasurement unit and the radio-communication time information from themessage log acquiring unit, and for causing to display graphs (7 e)indicating the measured results of the time domain waveforms and apredetermined number of radio-communication markers (7 c) indicatingpoints in radio-communication time which correspond to theradio-communication time information by a graphic display capable ofsimultaneously comparing at both sides of the same time base on thedisplay unit.

In order to achieve the above object, according to a second aspect ofthe present invention, there is provided a test system for a mobilecommunication terminal, according to the first aspect, wherein thedisplay control unit has:

a coordinate generating unit (8 d) which divides a display screen of thedisplay unit into at least a first region and a second region, and whichcauses to display a first coordinate (7 a) where the abscissa is timeand the ordinate is power level at the first region, and causes todisplay a second coordinate (7 b) where the abscissa is a time basewhich is the same as the abscissa of the first coordinate and theordinate is positions of the mobile communication terminal and theplurality of cells at the second region;

-   -   a data display control unit (8 a) which causes to display the        graphs indicating the measured results of the time domain        waveforms at the first coordinate displayed by means of the        coordinate generating unit; and

a radio-communication marker generating unit (8 c) which causes todisplay a predetermined number of radio-communication markers indicatingpoints in radio-communication time which correspond to theradio-communication time information along the abscissa which is a timebase of the second coordinate displayed by means of the coordinategenerating unit.

In order to achieve the above object, according to a third aspect of thepresent invention, there is provided a test system for a mobilecommunication terminal, according to the second aspect, wherein theradio-communication marker generating unit, as the predetermined numberof radio-communication markers, between the mobile communicationterminal and respective positions of the plurality of cells on theordinate in the second coordinate, causes to display capable ofrecognizing at least one of down radio-communication from the mobilecommunication terminal to one of the cells and up radio-communicationfrom one of the cell's to the mobile communication terminal, and capableof recognizing the points in radio-communication time which correspondto the radio-communication time information along the abscissa which isa time base of the second coordinate.

In order to achieve the above object, according to a fourth aspect ofthe present invention, there is provided a test system for a mobilecommunication terminal, according to the second aspect, wherein thereception measurement unit has a function of measuring a transition timethat, in accordance with a response signal from the mobile communicationterminal, until it is switched from a state in which the mobilecommunication terminal receives a first test signal showing a greaterstrength at a current point in time among the plurality of test signalsto a state in which the mobile communication terminal receives a secondtest signal having a second greater strength among the plurality of testsignals accompanying that the plurality of test signals are varied to besuccessively made to be a greater strength in accordance with thescheduled time passage,

the test system for a mobile communication terminal further comprises adetermining unit (6) which, upon receiving the measured results of thetransition time from the reception measurement unit, carries outsuccess/failure determination as to whether a transition has been asuccess or a failure in which the mobile communication terminal switchesfrom a state of receiving the first test signal to a state of receivingthe second test signal among the plurality of test signals correspondingto the plurality of cells in accordance with the control informationfrom the test procedure control unit, and

the data display control unit causes to display capable of recognizing asuccess/failure as a result of the success/failure determination by thedetermining unit together with a corresponding radio-communicationmarker among the predetermined number of radio-communication markersdisplayed by means of the radio-communication marker generating unit.

In order to achieve the above object, according to a fifth aspect of thepresent invention, there is provided a test system for a mobilecommunication terminal, according to the second aspect, wherein the datadisplay control unit causes to display capable of recognizing statesfrom a start up to a time of responding at a point in time when ascheduled response is completed, accompanying a display of thecorresponding radio-communication marker among the predetermined numberof radio-communication markers displayed by means of theradio-communication marker generating unit, at least one of the firstand second coordinates along the abscissa which is a time base of thefirst and second coordinates displayed by means of the coordinategenerating unit.

In order to achieve the above object, according to a sixth aspect of thepresent invention, there is provided a test system for a mobilecommunication terminal, according to the second aspect, wherein themessage log acquiring unit comprises a storage unit (9 a) which acquiresand analyzes message information when the transmission/reception unitand the mobile communication terminal exchange the respectivepredetermined messages, thereby storing at least a part of or a name ofthe message information so as to be read, and

the display control unit has:

a designation marker generating unit (8 c) which generates a designationmarker that moves in accordance with a selective designation of anoperator along the abscissa which is a time base of the secondcoordinate displayed by means of the coordinate generating unit, andcauses to display at least one of the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit; and

-   -   a message display control unit (8 e) which, when a specific        radio-communication marker among the predetermined number of        radio-communication markers is designated by the designation        marker displayed by means of the designation marker generating        unit, reads out at least a part of or a name of message        information corresponding to the specific radio-communication        marker from the storage unit of the message acquiring unit and        causes to display it on the display unit.

In order to achieve the above object, according to a seventh aspect ofthe present invention, there is provided a test system for a mobilecommunication terminal, according to the first aspect, wherein thereception measurement unit includes a spectrum analyzer having afunction of analyzing and measuring a response signal from the mobilecommunication terminal at a time domain.

In order to achieve the above object, according to an eighth aspect ofthe present invention, there is provided a test system for a mobilecommunication terminal, according to the second aspect, wherein the testprocedure control unit has a computer (PC) and computer readable programcode means (CRC) for causing the computer to carry out a transition testfor a connection state of the mobile communication terminal of thecellular system, and outputs control information including time settinginformation in accordance with the computer readable program code means.

In order to achieve the above object, according to a ninth aspect of thepresent invention, there is provided a test system for a mobilecommunication terminal, according to the eighth aspect, wherein thedetermining unit, the message log acquiring unit, and the displaycontrol unit are organized together with the test procedure control unitas software of the computer.

In order to achieve the above object, according to a tenth aspect of thepresent invention, there is provided a test system for a mobilecommunication terminal, according to the ninth aspect, wherein thecomputer readable program code means has:

first computer readable program code means for causing thetransmission/reception unit to generate a plurality of test signalsincluding predetermined messages corresponding to a plurality of cellsin the cellular system in accordance with the control information fromthe test procedure control unit, and to vary the plurality of testsignals in accordance with a scheduled time passage to thereby transmitthe signals to the mobile communication terminal and receive responsesignals including the predetermined messages from the mobilecommunication terminal;

second computer readable program code means for causing the receptionmeasurement unit to measure time domain waveforms of the responsesignals including the predetermined messages from the mobilecommunication terminal;

third computer readable program code means for causing the message logacquiring unit to acquire and store messages and the radio-communicationtime information when the transmission/reception unit and the mobilecommunication terminal exchange the respective predetermined messages;

fourth computer readable program code means for causing the display unitto display measured results of the time domain waveforms from thereception measurement unit and the radio-communication time informationfrom the message log acquiring unit; and

fifth computer readable program code means for causing the displaycontrol unit to carry out processing for receiving the measured resultsof the time domain waveforms from the reception measurement unit and theradio-communication time information from the message log acquiringunit, and to display graphs indicating the measured results of the timedomain waveforms and a predetermined number of radio-communicationmarkers indicating points in radio-communication time which correspondto the radio-communication time information by a graphic display capableof simultaneously comparing at both sides on the same time base on thedisplay unit.

In order to achieve the above object, according to an eleventh aspect ofthe present invention, there is provided a test system for a mobilecommunication terminal, according to the tenth aspect, wherein thecomputer readable program code means further has:

sixth computer readable program code means for causing the coordinategenerating unit to divide a display screen of the display unit into atleast a first region and a second region, and to display a firstcoordinate where the abscissa is time and the ordinate is power level onthe first region, and a second coordinate where the abscissa is a timebase which is the same as the abscissa of the first coordinate and theordinate is respective positions of the mobile communication terminaland the plurality of cells on the second region;

seventh computer readable program code means for causing the datadisplay control unit to display the graphs indicating the measuredresults of the time domain waveforms at the first coordinate displayedby means of the coordinate generating unit; and

eighth computer readable program code means for causing theradio-communication marker generating unit to display the predeterminednumber of radio-communication markers indicating points inradio-communication time which correspond to the radio-communicationtime information along the abscissa which is a time base of the secondcoordinate displayed by means of the coordinate generating unit.

In order to achieve the above object, according to a twelfth aspect ofthe present invention, there is provided a test system for a mobilecommunication terminal, according to the eleventh aspect, wherein thecomputer readable program code means further has:

ninth computer readable program code means for causing theradio-communication marker generating unit to display, as thepredetermined number of radio-communication markers, between therespective positions of the mobile communication terminal and theplurality of cells at the second coordinate, capable of recognizing atleast one of down radio-communication from the mobile communicationterminal to one of the cells and up radio-communication from one of thecells to the mobile communication terminal, and capable of recognizingthe points in radio-communication time which correspond to theradio-communication time information along the abscissa which is a timebase of the second coordinate.

In order to achieve the above object, according to a thirteenth aspectof the present invention, there is provided a test system for a mobilecommunication terminal, according to the twelfth aspect, wherein thecomputer readable program code means further has:

tenth computer readable program code means for causing the receptionmeasurement unit to, in accordance with a response signal from themobile communication terminal, measure a transition time that until itis switched from a state in which the mobile communication terminalreceives a first test signal showing a greater strength at a currentpoint in time among the plurality of test signals to a state in whichthe mobile communication terminal receives a second test signal having asecond greater strength among the plurality of test signals accompanyingthat the plurality of test signals are varied to be successively made tobe a greater strength in accordance with the scheduled time passage;

eleventh computer readable program code means for causing a determiningunit to, upon receiving the measured results of the transition time fromthe reception measurement unit, carry out success/failure determinationas to whether a transition has been a success or a failure in which themobile communication terminal is switched from a state of receiving thefirst test signal among the plurality of test signals corresponding tothe plurality of cells to a state of receiving the second test signal inaccordance with the control information from the test procedure controlunit; and

twelfth computer readable program code means for causing the datadisplay control unit to display capable of recognizing a success/failureas a result of the success/failure determination by the determining unittogether with a corresponding radio-communication marker among thepredetermined number of radio-communication markers displayed by meansof the radio-communication marker generating unit.

In order to achieve the above object, according to a fourteenth aspectof the present invention, there is provided a test system for a mobilecommunication terminal, according to the thirteenth aspect, wherein thecomputer readable program code means further has:

thirteenth computer readable program code means for causing the datadisplay control unit to display capable of recognizing states from astart up to a time of responding at a point in time when a scheduledresponse is completed, accompanying the display of a correspondingradio-communication marker among the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit, at least one of the firstand second coordinates along the abscissa which is a time base of thefirst and second coordinates displayed by means of the coordinategenerating unit.

In order to achieve the above object, according to a fifteenth aspect ofthe present invention, there is provided a test system for a mobilecommunication terminal, according to the fourteenth aspect, wherein thecomputer readable program code means further has fourteenth computerreadable program code means for causing the storage unit of the messagelog acquiring unit to acquire and analyze message information when thetransmission/reception unit and the mobile communication terminalexchange the respective predetermined messages, thereby storing at leasta part of or a name of the message information to be read.

In order to achieve the above object, according to a sixteenth aspect ofthe present invention, there is provided a test system for a mobilecommunication terminal, according to the fifteenth aspect, wherein thecomputer readable program code means further has:

fifteenth computer readable program code means for causing thedesignation marker generating unit of the display control unit to movein accordance with a selective designation by an operator along theabscissa which is a time base of the second coordinate displayed bymeans of the coordinate generating unit, and generate a designationmarker identifying at least one of the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit to be designated; and

sixteenth computer readable program code means for causing the messagedisplay control unit of the display control unit to, when a specificradio-communication marker among the predetermined number ofradio-communication markers is designated by the designation markerdisplayed by means of the designation marker generating unit, read outat least a part of or a name of the message information corresponding tothe specific radio-communication marker from the message acquiring unit,and to display it on the display unit.

In order to achieve the above object, according to a seventeenth aspectof the present invention, there is provided a test method for a mobilecommunication terminal, comprising:

a step of preparing a test procedure control unit (5) which possesses aprocedure for carrying out a transition test for a connection state of amobile communication terminal (UE 1) of a cellular system, andoutputting control information including time setting information inaccordance with the procedure from the test procedure control unit;

a step of preparing a transmission/reception unit (3), and in accordancewith the control information from the test procedure control unit,generating a plurality of test signals including predetermined messagescorresponding to a plurality of cells (21, 22, 23, 24, . . . ) in thecellular system, and varying the plurality of test signals in accordancewith a scheduled time passage to thereby transmit the signals to themobile communication terminal and receive a response signal including apredetermined message from the mobile communication terminal in thetransmission/reception unit;

a step of preparing a reception measurement unit (4), and measuring atime domain waveform of the response signal including the predeterminedmessage from the mobile communication terminal in the receptionmeasurement unit;

a step of preparing a message log acquiring unit (9), and acquiring andstoring messages and radio-communication time information when thetransmission/reception unit and the mobile communication terminalexchange respective messages by means of the message log acquiring unit;

a step of preparing a display unit (7), and displaying measured resultsof the time domain waveforms from the reception measurement unit, andthe radio-communication time information from the message log acquiringunit on the display unit; and

a step of preparing a display control unit (8), and carrying outprocessing for receiving the measured results of the time domainwaveforms from the reception measurement unit and theradio-communication time information from the message log acquiringunit, and for causing to display graphs (7 e) indicating the measuredresults of the time domain waveforms and a predetermined number ofradio-communication markers (7 c) indicating points inradio-communication time which correspond to the radio-communicationtime information by a graphic display capable of simultaneouslycomparing at both sides of the same time base on the display unit bymeans of the display control unit.

In order to achieve the above object, according to an eighteenth aspectof the present invention, there is provided a test method for a mobilecommunication terminal, according to the seventeenth aspect, wherein thetest procedure control unit has a computer (PC) and computer readableprogram code means (CRC) for causing the computer to carry out atransition test for a connection state of the mobile communicationterminal of the cellular system, and outputs control informationincluding time setting information in accordance with the computerreadable program code means.

In order to achieve the above object, according to a nineteenth aspectof the present invention, there is provided a test method for a mobilecommunication terminal, according to the eighteenth aspect, wherein themessage log acquiring unit and the display control unit are organizedtogether with the test procedure control unit as software of thecomputer.

In order to achieve the above object, according to a twentieth aspect ofthe present invention, there is provided a test method for a mobilecommunication terminal, according to the nineteenth aspect, wherein thecomputer readable program code means has:

first computer readable program code means for causing thetransmission/reception unit to, in accordance with the controlinformation from the test procedure control unit, generate a pluralityof test signals including predetermined messages corresponding to theplurality of cells in the cellular system, and vary the plurality oftest signals in accordance with a scheduled time passage to therebytransmit the signals to the mobile communication terminal and receiveresponse signals including the predetermined messages from the mobilecommunication terminal;

second computer readable program code means for causing the receptionmeasurement unit to measure time domain waveforms of the responsesignals including the predetermined messages from the mobilecommunication terminal;

third computer readable program code means for causing the message logacquiring unit to acquire and store messages and radio-communicationtime information when the transmission/reception unit and the mobilecommunication terminal exchange the respective predetermined messages;

fourth computer readable program code means for causing the display unitto display measured results of the time domain waveforms from thereception measurement unit and the radio-communication time informationfrom the message log acquiring unit; and

fifth computer readable program code means for causing the displaycontrol unit to carry out processing for receiving the measured resultsof the time domain waveforms from the reception measurement unit and theradio-communication time information from the message log acquiringunit, and for causing to display graphs indicating the measured resultsof the time domain waveforms and a predetermined number ofradio-communication markers indicating points in radio-communicationtime which correspond to the radio-communication time information by agraphic display capable of simultaneously comparing at both sides on thesame time base on the display unit.

In order to achieve the above object, according to a twenty-first aspectof the present invention, there is provided a test method for a mobilecommunication terminal, according to the twentieth aspect, wherein thecomputer readable program code means further has:

sixth computer readable program code means for causing a coordinategenerating unit (8 d) of the display control unit to divide a displayscreen (71) of the display unit into at least a first region (72) and asecond region (73), and to display a first coordinate (7 a) where theabscissa is time and the ordinate is power level on the first region,and a second coordinate (7 b) where the abscissa is a time base which isthe same as the abscissa of the first coordinate and the ordinate isrespective positions of the mobile communication terminal and theplurality of cells on the second region;

seventh computer readable program code means for causing a data displaycontrol unit (8 a) of the display control unit to display graphsindicating the measured results of the time domain waveforms at thefirst coordinate displayed by means of the coordinate generating unit;and

eighth computer readable program code means for causing aradio-communication marker generating unit (8 b) of the display controlunit to display a predetermined number of radio-communication markersindicating points in radio-communication time which correspond to theradio-communication time information along the abscissa which is a timebase of the second coordinate displayed by means of the coordinategenerating unit.

In order to achieve the above object, according to a twenty-secondaspect of the present invention, there is provided a test method for amobile communication terminal, according to the twenty-first aspect,wherein the computer readable program code means further has:

ninth computer readable program code means for causing theradio-communication marker generating unit of the display control unitto display capable of recognizing, as the predetermined number ofradio-communication markers, between the respective positions of themobile communication terminal and the plurality of cells on the ordinateat the second coordinate, at least one of down radio-communication fromthe mobile communication terminal to one of the cells and upradio-communication from one of the cells to the mobile communicationterminal, and capable of recognizing the points in radio-communicationtime which correspond to the radio-communication time information alongthe abscissa which is a time base of the second coordinate.

In order to achieve the above object, according to a twenty-third aspectof the present invention, there is provided a test method for a mobilecommunication terminal, according to the twenty-second aspect, whereinthe computer readable program code means further has:

tenth computer readable program code means for causing the receptionmeasurement unit to, in accordance with the response signals from themobile communication terminal, measure a transition time that until itis switched from a state in which the mobile communication terminalreceives a first test signal showing a greater strength at a currentpoint in time among the plurality of test signals to a state in whichthe mobile communication terminal receives a second test signal having asecond greater strength among the plurality of test signals accompanyingthat the plurality of test signals are varied to be successively made tobe a greater strength in accordance with the scheduled time passage;

eleventh computer readable program code means for causing thedetermining unit to, upon receiving the measured results of thetransition time from the reception measurement unit, carry outsuccess/failure determination as to whether a transition has been asuccess or a failure in which the mobile communication terminal isswitched from a state of receiving the first test signal among theplurality of test signals corresponding to the plurality of cells to astate of receiving the second test signal in accordance with the controlinformation from the test procedure control unit; and

twelfth computer readable program code means for causing the datadisplay control unit of the display control unit to display capable ofrecognizing a success/failure as the result of the success/failuredetermination by the determining unit together with a correspondingradio-communication marker among the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit.

In order to achieve the above object, according to a twenty-fourthaspect of the present invention, there is provided a test method for amobile communication terminal, according to the twenty-third aspect,wherein the computer readable program code means further has:

thirteenth computer readable program code means for causing the datadisplay control unit to display capable of recognizing states from astart up to a time of responding at a point in time when a scheduledresponse is completed, accompanying the display of a correspondingradio-communication marker among the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit, at least one of the firstand second coordinates along the abscissa which is a time base of thefirst and second coordinates displayed by means of the coordinategenerating unit.

In order to achieve the above object, according to a twenty-fifth aspectof the present invention, there is provided a test method for a mobilecommunication terminal, according to the twenty-fourth aspect, whereinthe computer readable program code means further has:

fourteenth computer readable program code means for causing the storageunit of the message log acquiring unit to acquire and analyze messageinformation when the transmission/reception unit and the mobilecommunication terminal exchange the respective predetermined messages,thereby storing at least a part of or a name of the message informationto be read.

In order to achieve the above object, according to a twenty-sixth aspectof the present invention, there is provided a test method for a mobilecommunication terminal, according to the twenty-fifth aspect, whereinthe computer readable program code means further has:

fifteenth computer readable program code means for causing thedesignation marker generating unit of the display control unit to movein accordance with a selective designation by an operator along theabscissa which is a time base of the second coordinate displayed bymeans of the coordinate generating unit, and to generate a designationmarker identifying at least one of the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit to be designated; and

sixteenth computer readable program code means for causing the messagedisplay control unit of the display control unit to, when a specificradio-communication marker among the predetermined number ofradio-communication markers is designated by the designation markerdisplayed by the designation marker generating unit, read out at least apart of or a name of the message information corresponding to thespecific radio-communication marker from the message acquiring unit, andto display it on the display unit.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a functional block diagram showing a configuration of a testsystem for a mobile communication terminal according to one embodimentof the present invention.

FIG. 2A is a view for explaining an example in which a state ofexchanging messages between a mobile communication terminal (UE) 1 andcells 21 and 22, and a waveform of a response signal from the mobilecommunication terminal (UE) 1 at that time are displayed as one exampleof a display by a display control unit of FIG. 1.

FIG. 2B is a view for explaining transmitting power levels between thecells 21 and 22 of FIG. 2A.

FIG. 3 is a view for explaining an example in which a state ofexchanging messages between a mobile communication terminal (UE) 1 andcells 21 and 22, and a waveform of a response signal from the mobilecommunication terminal (UE) 1 at that time are displayed as anotherexample of a display by the display control unit of FIG. 1.

FIG. 4 is a diagram for explaining the relationship between cells(service areas) and base stations in a cellular system conventionallyknown.

FIG. 5 is a functional block diagram showing a configuration of aconventional test system for a mobile communication terminal whichcarries out an RRM test.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, one embodiment of a test system for a mobile communicationterminal according to the present invention will be described withreference to the drawings.

FIG. 1 is a block diagram showing a functional configuration of the testsystem for the mobile communication terminal according to the invention.

FIG. 2A is a view for explaining an example in which radio-communicationstates of messages between a mobile communication terminal (UE) 1 andcells 21 and 22, and waveforms of response signals from the mobilecommunication terminal (UE) 1 at that time, are displayed as one exampleof a display by a display control unit of FIG. 1.

FIG. 2B is a view for explaining transmitting power levels between thecells 21 and 22 of FIG. 2A.

FIG. 3 is a view for explaining an example in which radio-communicationstates of messages between the mobile communication terminal (UE) 1 andthe cells 21 and 22, and waveforms of response signals from the mobilecommunication terminal (UE) 1 at that time, are displayed as anotherexample of a display by the display control unit of FIG. 1.

First, the functional configuration of the embodiment of the test systemfor the mobile communication terminal according to the invention will bedescribed on the basis of FIG. 1.

In FIG. 1, the functions of the mobile communication terminal (UE) 1, aconnection unit 2, a transmission/reception unit 3, and a test procedurecontrol unit 5 with reference numerals which are the same as those ofFIG. 5 described in Background Art section are the same as the functionsof those of FIG. 5 as well, and therefore, detailed descriptions thereofwill be omitted.

Accordingly, the functions of a reception measurement unit 4, adetermining unit 6, and a display unit 7 which are different from thefunctions of those in FIG. 5, and a display control unit 8 and a messagelog acquiring unit 9 which are newly provided, will be mainly describedhereinafter.

First, as shown in FIG. 1, the test system for the mobile communicationterminal according to the embodiment of the invention is, as the basicconfiguration, configured of: the test procedure control unit 5 whichpossesses a procedure for carrying out a transition test of a connectionstate of the mobile communication terminal (UE) 1 of a cellular system,and which outputs control information including time setting informationin accordance with the procedure; the transmission/reception unit 3which generates a plurality of test signals including a predeterminedmessage and corresponding to a plurality of cells 21, 22, 23, 24, . . ., in the cellular system in accordance with the control information fromthe test procedure control unit 5, and which varies the plurality oftest signals in accordance with a scheduled time passage to therebytransmit the signals to the mobile communication terminal (UE) 1 andreceive response signals including the predetermined messages from themobile communication terminal (UE) 1; the reception measurement unit 4which measures time domain waveforms of the response signals includingthe predetermined messages from the mobile communication terminal (UE)1; the message log acquiring unit 9 which acquires and stores themessages and the radio-communication time information at the time whenthe transmission/reception unit 3 and the mobile communication terminal(UE) 1 exchange the predetermined messages; the display unit 7 whichdisplays the measured results of the time domain waveforms from thereception measurement unit 4, and the radio-communication timeinformation from the message log acquiring unit 9; and the displaycontrol unit 8 which receives the measured results of the time domainwaveforms from the reception measurement unit 4 and theradio-communication time information from the message log acquiring unit9, and which causes to display graphs 7 e indicating the measuredresults of the time domain waveforms and a predetermined number ofradio-communication markers 7 c indicating points in radio-communicationtime which correspond to the radio-communication time information by agraphic display capable of simultaneously comparing at both sides of thesame time base on the display unit 7.

Specifically, in FIG. 1, the reception measurement unit 4 receives aresponse signal output from the mobile communication terminal (UE) 1 soas to tune the frequency of the signal, measures the signal at a timedomain, and stores the measured waveform.

The reception measurement unit 4 also has a function of, in accordancewith a response signal from the mobile communication terminal (UE) 1,measuring a transition time that it is switched from a state in whichthe mobile communication terminal (UE) 1 receives a first test signalshowing a greater intensity at a current point in time among theplurality of test signals to a state in which the mobile communicationterminal (UE) 1 receives a second test signal having a second greaterintensity among the plurality of test signals according that theplurality of test signals are successively made to be greater intensityin accordance with the scheduled time passage.

Further, the reception measurement unit 4 measures a time in which themobile communication terminal (UE) 1 carries out switching the cells inaccordance with variations in signals corresponding to the plurality ofcells 21, 22, 2 of the transmission/reception unit 3.

The determining unit 6 determines whether or not a transition betweenthe cells of a connection state at the mobile communication terminal(UE) 1 is carried out within a predetermined time, and determines thecontents of the messages in a test in which the mobile communicationterminal (UE) 1 makes a call with the system simulator (thetransmission/reception unit 3 and the reception measurement unit 4).

The times and messages which will be standards for determinations at thedetermining unit 6 are supplied in advance from the test procedurecontrol unit 5.

The message log acquiring unit 9 receives a message which the mobilecommunication terminal (UE) 1 outputs at the time of exchanging amessage with the transmission/reception unit 3, at thetransmission/reception unit 3, and acquires the radio-communicationmessage outputted from the transmission/reception unit 3. Then, themessage log acquiring unit 9 analyses the contents thereof to store atleast a part of or the name thereof in a storage unit 9 a, and acquires(measures) the radio-communication time information of the message withthe transmission/reception unit 3.

In this case, suppose that the message acquired at the message logacquiring unit 9 includes a message which the mobile communicationterminal (UE) 1 outputs in response to the message from thetransmission/reception unit 3.

Further, at least a part of or a name of the message acquired in the waydescribed above is stored in the storage unit 9 a of the message logacquiring unit 9 to be read by a designation marker generating unit 8 cof the display control unit 8 which will be described later, such thatthe radio-communication time of the message, the origin of transmissionand the destination address of the message, and the like, can beidentified.

Accordingly, in addition to at least a part of or a name of the messageacquired in the way described above, the storage unit 9 a of the messagelog acquiring unit 9 stores therein information for identifying a celloutputting the message, and for identifying whether it is upradio-communication from the cell to the mobile communication terminal(UE) 1 or down radio-communication from the mobile communicationterminal (UE) 1 to the cell.

In the above description, the case in which the message log acquiringunit 9 deals with only the message from the mobile communicationterminal (UE) 1 is described. However, a message transmitted from thetransmission/reception unit 3 to the mobile communication terminal (UE)1 as well may be dealt with in the same way as the message from themobile communication terminal (UE) 1.

The message log acquiring unit 9 is configured as an independent blockin order to functionally describe in FIG. 1. However, the message logacquiring unit 9 may be provided in the transmission/reception unit 3.

Then, in a manner of speaking, the message log acquiring unit 9 hasacquired a message exchanging record, and acquires a radio-communicationrecord relating to a response signal and a messages as the entiresystem, including the message exchanging record and the waveform of aresponse signal from the mobile communication terminal (UE) 1.

The display control unit 8 configures the most featured portion of thepresent invention, and is configured of a data display control unit 8 a,a radio-communication marker generating unit 8 b, the designation markergenerating unit 8 c, a coordinate generating unit 8 d, and a message logdisplay control unit 8 e.

The data display control unit 8 a is configured for causing to displaynumeric data measured by the reception measurement unit 4, determinedresults of the determining unit 6, and the like, as numeric data on thedisplay unit 7 in the same way as in the conventional art, and so as tocarry out a graphic display as a peculiar function to the invention aswill be described later.

The coordinate generating unit 8 d generates a coordinate for causing todisplay the time passage of the measurement which has been scheduled andthe radio-communication progress of the message in advance, on thedisplay screen of the display unit 7, in accordance with the testprocedure stored in the test procedure control unit 5 according to theregulation regulated in the non-Patent document described above, forexample, as a regulation in the W-CDMA communication system.

For example, as shown in FIG. 2A, the coordinate generating unit 8 ddivides display screen 71 of the display unit 7 into two; a first region72 showing a first coordinate 7 a where the abscissa expresses time andthe ordinate expresses power level is prepared at the upper stage; asecond region 73 showing a second coordinate 7 b where the abscissa hasthe same time base in common with the abscissa of the first coordinate 7a, and the ordinate is made to be the positions of the mobilecommunication terminal (UE) 1, the cell 21, and the cell 22 is preparedat the lower stage; and those first coordinate 7 a and second coordinate7 b are simultaneously displayed on the display screen 71 of the displayunit 7.

Here, with respect to setting of the times on the abscissa in commonwith the first coordinate 7 a and the second coordinate 7 b, forexample, in a test for switching from a state in which the mobilecommunication terminal (UE) 1 is receiving a signal corresponding to thecell 21 from the transmission/reception unit 3 to a state of receiving asignal corresponding to the cell 22 due to the transmission/receptionunit 3 varying the level of the signal corresponding to the cell 22 tobe higher than the level of the signal corresponding to the cell 21 inresponse to the request applied to the transmission/reception unit 3 inaccordance with the time information set from the test procedure controlunit 5, the setting of the times are carried out given that a time ofthe transmission/reception unit 3 to respond to the request t=0s, and atime to complete the switching t=15s.

These setting of the times are determined on the basis of theinformation on measurement conditions, items, and the like from the testprocedure control unit 5, and thereby displayed along the time base ofthe abscissa in common with the first coordinate 7 a and the secondcoordinate 7 b on the display screen 7 a of the display unit 7.

The data display control unit 8 a is configured for causing to displaythe time domain waveform of the response signal, the signal beingmeasured by the reception measurement unit 4 and being output from themobile communication terminal (UE) 1, on the first region 72 serving asthe first coordinate 7 a on the display screen 71 of the display unit 7displayed by means of the coordinate generating unit 8 d as describedabove.

It goes without saying that the data display control unit 8 a isconfigured so as to display the level of the signal and numeric datasuch as a response time and the like when there is a response signalfrom the mobile communication terminal (UE) 1 (refer to FIGS. 2A and 3).

The radio-communication marker generating unit 8 b generatesradio-communication markers 7 c. By the radio-communication markers 7 c,between which cell and the mobile communication terminal (UE) 1 themessage is exchanged, from which cell or the mobile communicationterminal (UE) 1 the incoming direction of the message is, when themessage was generated, and the like, can be easily recognized on thebasis of the radio-communication records of the mobile communicationterminal (UE) 1 and the transmission/reception unit 3 acquired by themessage log acquiring unit 9.

The radio-communication marker generating unit 8 b is configured suchthat a predetermined number of radio-communication markers 7 c aregenerated by vertical lines with arrows indicating an incoming directionof a message for each message, whereby as shown on the second region 73of FIG. 2A, the predetermined number of radio-communication markers 7 care displayed so as to associate the respective positions of thecorresponding cells and the mobile communication terminal (UE) 1 on theordinate of the second coordinate 7 b with the correspondingradio-communication time positions along the abscissa which is a timebase of the second coordinate 7 b displayed on the display screen 71 ofthe display unit 7.

Note that, in the present invention, the radio-communication markers 7 care displayed also with respect to the messages from thetransmission/reception unit 3 to the mobile communication terminal (UE)1 as shown in FIGS. 2A and 3.

The reason for this is that, although only the malfunction at the oneside can be distinguished by only the radio-communication marker 7 c ofthe message from one side when the mobile communication terminal (UE) 1and the transmission/reception unit 3 are in a state ofradio-communication, if the radio-communication markers 7 c from bothsides are displayed, any of the malfunctions at both sides can be easilydistinguished.

Accordingly, basically, the radio-communication marker generating unit 8b may be configured so as to generate a predetermined number ofradio-communication markers 7 c indicating the points inradio-communication time which correspond to the radio-communicationtime information along the abscissa which is a time base of the secondcoordinate, and to causing to display those predetermined number ofradio-communication markers 7 c.

The designation marker generating unit 8 c generates a designationmarker 7 d (refer to the asterisk of FIG. 3, a marker having a shapedifferent from the radio-communication markers 7 c) by which an operatorcan selectively designate one of the radio-communication markers 7 cdisplayed by means of the radio-communication marker generating unit 8b, and to causes to display the designation marker 7 d to correspond tothe radio-communication marker 7 c to be selected.

Various shapes of the designation marker 7 d can be considered. However,if the color of the designated radio-communication marker 7 c is made tovary at the time of being designated by the designation marker 7 d, itis convenient because it is easy to distinguish being selected or beingunselected.

Further, when a specific radio-communication marker 7 c is selected onthe display screen 71 of the display unit 7, the designation markergenerating unit 8 c is configured so as to transmit identificationinformation for designating the specific radio-communication marker 7 cto the message log acquiring unit 9.

The message log acquiring unit 9 reads a part of or a name of a messagecorresponding to the radio-communication marker 7 c specified at thedesignation marker generating unit 8 c on the basis of theidentification information for designating a specificradio-communication marker 7 c from the designation marker generatingunit 8 c, and transmits the part of or the name of the message to themessage display control unit 8 e, thereby displaying part of or the nameof the message on the display screen 71 of the display unit 7.

In this case, the message display control unit 8 e may cause to displaypart of or the name of the specific message transmitted from the messagelog acquiring unit 8 e on a frame which is separated from or to beoverlapped upon those coordinates, or on another screen, differentlyfrom the first region 72 and the second region 73 on the display screen71 of the display unit 7.

For example, in this case, as a message corresponding to the designationmarker 7 d and the radio-communication marker 7 c designated by thedesignation marker 7 d, a message name “RRC Connection Request” isdisplayed as shown in FIG. 3.

Here, RRC is an abbreviation for radio resource control, and a name of asub-layer of a radio-communication interface third layer.

This makes it possible for the operator to recognize that there is arequest for connection from the mobile communication terminal (UE) 1 tothe cell 21 due to the display of the designation marker 7 d, theradio-communication marker 7 c designated by the designation marker 7 d,and the message name “RRC Connection Request”.

The determining unit 6 receives time information of a response signalmeasured by the reception measurement unit 4, and determines whether ornot it has responded within a regulated time.

The determining unit 6 carries out determination on a success/failurethat a transition in which the mobile communication terminal (UE) 1switches from a state of receiving the first test signal among theplurality of test signals corresponding to the plurality of cells 21,22, 23, 24, . . . , to a state of receiving the second test signal hasbeen a success or a failure in accordance with the control informationfrom the test procedure control unit 5 by receiving the measured resultof the transition time from the reception measurement unit 4.

Further, the determining unit 6 determines whether or not a scheduledmessage has responded within a regulated time on the basis of a messageacquired by the message log acquiring unit 9 and a response time of themessage.

Here, the determining unit 6 receives the time information which will bethe standard needed for a determination in advance from the time settingunit 5 a of the test procedure control unit 5.

Further, the determining unit 6 receives a message which will be thestandard needed for a determination in advance from thetransmission/reception unit 3 via the message log acquiring unit 9.

Then, the determined results at the determining unit 6 may be, alongwith numeric data, displayed in a list at a display frame different fromthe first region 72 and the second region 73 on the display screen 71 ofthe display unit 7 via the data display control unit 8 a, or as will bedescribed later, may be displayed together with the radio-communicationmarkers 7 c and the like with marks of ◯× indicating whether theswitching of the connection states of the mobile communication terminal(UE) 1 has been a success or a failure.

Hereinafter, a flow will be described by using operations for measuringa time in which a connection state of the mobile communication terminal(UE) 1 is switched from the cell 22 to the cell 21 as an example on thebasis of FIGS. 2A and 2B.

Here, in FIG. 2A, the portion shown by reference numeral 71 is actuallydisplayed as a display screen on the display screen of the display unit7.

FIG. 2B is a view showing a timing relationship for explainingtransmitting power levels between the cells 21 and 22.

(1) Although control is carried out with respect to each portion inaccordance with the test procedure which the test procedure control unit5 has possessed in advance, the time passage is set at the time settingunit 5 a in the test procedure control unit 5.

(2) At the beginning, as shown in the timing diagram of FIG. 2B, thelevel of the transmitting power (signal strength) from atransmitter/receiver 3 a (cell 21) is weak (L), and the level of thetransmitting power (signal strength) from a transmitter/receiver 3 b(cell 22) is strong (H). Therefore, when the mobile communicationterminal (UE) 1 is a state of radio-communicating with the cell 22, thecell 22 starts to reduce the level of the transmitting power from thecell 22 and the cell 21 starts to raise the level of the transmittingpower from the cell 21 at time t0.

The level of the transmitting power from the cell 21 and the level ofthe transmitting power from the cell 22 are made same at time t1.

Up to this stage, the mobile communication terminal (UE) 1 holds in astate of receiving the cell 22.

A switching time from the time t1 until the mobile communicationterminal (UE) 1 receives the cell 21 is an evaluation object for thetest. Therefore, assuming that the time t1 is the start point of theabscissa (which may be displayed as a measurement start point, forexample, 0 sec), and a regulated time for switching is Δt, thecoordinate generating unit 8 d displays it as an end time t7 (t1+Δt, forexample, may be displayed as 15 sec).

In accordance therewith, the coordinate generating unit 8 d causes todisplay the first coordinate 7 a on the first region 72 and the secondcoordinate 7 b on the second region 73 on the display screen 71 of thedisplay unit 7.

(3) At time t2, the mobile communication terminal (UE) 1 transmits aresponse signal “RRC Connection Request” as a preamble part to the cell21 in response to the cell 21.

This time t1 to t2 is an evaluation for the time up to the switching ofthe cells of the mobile communication terminal (UE) 1.

On the basis of the results measured/acquired by the receptionmeasurement unit 4 and the message log acquiring unit 9 at time t2, alevel “RACH Level: 51.23 dBm” is, along with the measured level waveform7 e, displayed as numeric data at the first region 72 on the displayscreen 71 of the display unit 7, and a time “UE Response: 7.68 sec” is,along with the radio-communication marker 7 c by the vertical line withan arrow, displayed as numeric data at the second region 73 by means ofthe data display control unit 8 a and the radio-communication markergenerating unit 8 b.

Thereafter, a response signal from the cell 21 to the mobilecommunication terminal (UE) 1 is transmitted, and a radio-communicationmarker 7 c of the arrow indicating the response is displayed.

Then, in this case, the mark of ◯ indicating that the switching of theconnection state of the mobile communication terminal (UE) 1 hassucceeded within a predetermined time is displayed above theradio-communication marker 7 c.

(4) Thereafter, radio-communication is carried out in accordance withthe test procedure which the test procedure control unit 5 has possessedin advance.

For example, when data is transmitted from the mobile communicationterminal (UE) 1 to the cell 21 at time t3, the transmitting levelwaveform (which continues from time t3 to time t4) 7 e is displayed atthe region 72 on the display screen 71 of the display unit 7.

(5) Moreover, radio-communication is repeated between the mobilecommunication terminal (UE) 1 and the cell 21 at time t5 and time t6,and the test is completed.

At that time, at the respective times t5 and t6, the measured levelwaveforms 7 e at corresponding times are displayed at the region 72 onthe display screen 71 of the display unit 7, and the radio-communicationmarkers 7 c by vertical lines with arrows at the corresponding times t5and t6 are displayed at the second region 73.

(6) Thereafter, the above-described tests from times t1 to t7 arerepeatedly carried out.

In this way, in accordance with the test system for a mobilecommunication terminal in accordance with the present embodiment, themeasured waveforms of the response signals from the mobile communicationterminal (UE) 1 and the radio-communication markers 7 c indicating themessage radio-communication states are compared at both sides of thesame time base while being simultaneously displayed by a graphic displayas shown in FIG. 2A. Therefore, an operator can obtain the advantagethat, when an abnormality is brought about, it can be easily checkedwhether or not signals and messages which have been scheduled in thetest procedure possessed by the test procedure control unit 5 are beingcarried out so as to correspond to one another within scheduled times,by scheduled cells and scheduled messages by grasping those so as to bevisually recognizable.

For example, abnormalities can be known in which such that a message istransmitted from the mobile communication terminal (UE) 1 at anunscheduled time (for example, refer to the radio-communication markerindicated with reference numeral X in FIG. 3 and the measured levelwaveform at that time), or although a signal has been transmitted fromthe mobile communication terminal (UE) 1, the message has not beentransmitted, or the message has not been analyzed due to the levelthereof being made down, and the like.

When the radio-communication marker 7 c is being displayed, the operatordesignates it by overlapping the designation marker 7 d upon thespecific radio-communication marker 7 c by the designation markergenerating unit 8 c (the asterisk in FIG. 3). In this case, the messagedisplay control unit 8 e reads out the name of the message correspondingto the specific radio-communication marker from the message logacquiring unit 9, and displays it on the display unit 7.

In this case, for example, a message corresponding to theradio-communication marker 7 c designated by the designation marker 7 dwith the asterisk in FIG. 3 is displayed as “Message: RRC ConnectionRequest” in the second region 73 of FIG. 3.

In accordance therewith, the operator can confirm the contents of themessage in a state of abnormal.

Further, as shown in FIG. 3, accompanying the display of theradio-communication marker 7 c, it may be colored with a color from thestart up to the time of responding, e.g., blue (in FIG. 3, diagonals forconvenience) at a point in time when the scheduled response iscompleted.

In this case, the color may be changed in accordance with adetermination of the response. In addition, the determined result by thedetermining unit 6 may be added above the radio-communication marker 7 cin a ◯× format indicating whether the switching of the connection stateof the mobile communication terminal (UE) 1 as described above has beena success or a failure.

The test procedure control unit 5 has, for example, a personal computerPC and computer readable program code means (CRC) in which a program forcausing the computer PC to carry out a transition test of a connectionstate of the mobile communication terminal (UE) 1 of the cellular systemhas been recorded in advance on a recording medium, and is configured soas to output control information including the time setting informationin accordance with the computer readable program code means (CRC).Accordingly, the test procedure control unit 5 may be configured so asto manage the entire control for carrying out the transition test of theconnection state of the mobile communication terminal (UE) 1 via thesystem simulator.

Further, the determining unit 6, the message log acquiring unit 9, andthe display control unit 8 may be organized along with the testprocedure control unit 5 as software of the computer PC.

In this case, the computer readable program code means (CRC) comprises:first computer readable program code means for causing thetransmission/reception unit 3 to generate the plurality of test signalsincluding predetermined messages corresponding to the plurality of cells21, 22, 23, 24, . . . , in the cellular system in accordance with thecontrol information from the test procedure control unit 5, and vary theplurality of test signals in accordance with a scheduled time passage tothereby transmit the signals to the mobile communication terminal (UE) 1and receive response signals including the predetermined messages fromthe mobile communication terminal (UE) 1; second computer readableprogram code means for causing the reception measurement unit 4 tomeasure time domain waveforms of the response signals including thepredetermined messages from the mobile communication terminal (UE) 1;third computer readable program code means for causing the message logacquiring unit 9 to acquire and store the messages and theradio-communication time information when the transmission/receptionunit 3 and the mobile communication terminal (UE) 1 exchange therespective predetermined messages; fourth computer readable program codemeans for causing the display unit 7 to display measured results of thetime domain waveforms from the reception measurement unit 4 and theradio-communication time information from the message log acquiring unit9; and fifth computer readable program code means for causing thedisplay control unit 8 to receive the measured results of the timedomain waveforms from the reception measurement unit 4 and theradio-communication time information from the message log acquiring unit9, and carry out processing for displaying graphs 7 e indicating themeasured results of the time domain waveforms and a predetermined numberof radio-communication markers 7 c indicating points inradio-communication time which correspond to the radio-communicationtime information on the display unit 7 by a graphic display capable ofsimultaneously comparing at both sides on the same time base.

The computer readable program code means CRC may further comprise: sixthcomputer readable program code means for causing the coordinategenerating unit 8 d to divide the display screen 71 of the display unit7 into at least the first region 71 and the second region 72, and todisplay the first coordinate 7 a where the abscissa is time and theordinate is power level on the first region 72, and the secondcoordinate 7 b where the abscissa is a time base which is the same asthe abscissa of the first coordinate 7 a and the ordinate is respectivepositions of the mobile communication terminal (UE) 1 and the pluralityof cells 21 and 22 on the second region 73; seventh computer readableprogram code means for causing the data display control unit 8 a todisplay the graphs 7 e indicating the measured results of the timedomain waveforms at the first coordinate 7 a displayed by means of thecoordinate generating unit 8 d; and eighth computer readable programcode means for causing the radio-communication marker generating unit 8b to display the predetermined number of radio-communication markers 7 cindicating points in radio-communication time which correspond to theradio-communication time information along the abscissa which is a timebase of the second coordinate 7 b displayed by means of the coordinategenerating unit 8 d.

The computer readable program code means CRC may further comprise ninthcomputer readable program code means for causing the radio-communicationmarker generating unit 8 b to display capable of recognizing, as thepredetermined number of radio-communication markers, between therespective positions of the mobile communication terminal (UE) 1 and theplurality of cells 21 and 22 at the second coordinate 7 b, at least oneof down radio-communication from the mobile communication terminal (UE)1 to one of the cells 21 and 22 and up radio-communication from one ofthe cells 1 and 22 to the mobile communication terminal (UE) 1, andcapable of recognizing the points in radio-communication time whichcorrespond to the radio-communication time information along theabscissa which is a time base of the second coordinate 7 b.

The computer readable program code means CRC may further comprise tenthcomputer readable program code means for causing the receptionmeasurement unit 4 to, in accordance with the response signals from themobile communication terminal (UE) 1, measure a transition time thatuntil it is switched from a state in which mobile communication terminal(UE) 1 receives a first test signal showing a greater strength at acurrent point in time among the plurality of test signals to a state inwhich the mobile communication terminal (UE) 1 receives a second testsignal having a second greater strength among the plurality of testsignals accompanying that the plurality of test signals are varied so asto be successively made to be a greater strength in accordance with thescheduled time passage; eleventh computer readable program code meansfor causing the determining unit 6 to carry out success/failuredetermination as to whether a transition has been a success or a failurein which the mobile communication terminal (UE) 1 is switched from astate of receiving the first test signal among the plurality of testsignals corresponding to the plurality of cells 21 and 22 to a state ofreceiving the second test signal in accordance with the controlinformation from the test procedure control unit 5 by receiving themeasured results of the transition time from the reception measurementunit 4; and twelfth computer readable program code means for causing thedata display control unit 8 a to display capable of recognizing asuccess/failure, as the result of the success/failure determination bythe determining unit 6, together with the correspondingradio-communication marker 7 c among the predetermined number ofradio-communication markers 7 c displayed by means of theradio-communication marker generating unit.

The computer readable program code means CRC may further comprisethirteenth computer readable program code means for causing the datadisplay control unit 8 a to display capable of recognizing states from astart up to a time of responding at a point in time when a scheduledresponse is completed, accompanying the display of the correspondingradio-communication marker 7 c among the predetermined number ofradio-communication markers 7 c displayed by means of theradio-communication marker generating unit 8 b, at least one of thefirst and second coordinates 7 a and 7 b along the abscissa which is atime base of the first and second coordinates 7 a and 7 b displayed bymeans of the coordinate generating unit 8 d.

The computer readable program code means CRC may further comprisefourteenth computer readable program code means for causing the messagelog acquiring unit 9 to store at least a part of or a name of themessage information so as to be read by acquiring and analyzing messageinformation when the transmission/reception unit 3 and the mobilecommunication terminal (UE) 1 exchange the respective predeterminedmessages.

The computer readable program code means CRC may further comprise:fifteenth computer readable program code means for causing thedesignation marker generating unit 8 c of the display control unit tomove in accordance with a selective designation by the operator alongthe abscissa which is a time base of the second coordinate 2 b displayedby means of the coordinate generating unit 8 d, and to generate thedesignation marker 7 d identifying at least one of the predeterminednumber of radio-communication markers 7 c displayed by means of theradio-communication marker generating unit 8 b to be designated; andsixteenth computer readable program code means for causing the messagedisplay control unit 8 e of the display control unit 8 to read out atleast a part of or a name of the message information corresponding tothe specific radio-communication marker from the message acquiring unit9, and to display it on the display unit 7, when a specificradio-communication marker 7 c among the predetermined number ofradio-communication markers 7 c is designated by the designation marker7 d displayed by means of the designation marker generating unit 8 c.

Accordingly, as described above in detail, in accordance with thepresent invention, in a connection transition test or the like by thesystem simulator of the mobile communication terminal, a test system fora mobile communication terminal can be provided in which, due toresponse states and signal waveforms of messages at the time of the testbeing displayed by a graphic display capable of simultaneously comparingat both sides of the same time base, an operator can grasp those so asto be visually recognizable.

1. A test system for a mobile communication terminal, comprising: a testprocedure control unit which possesses a procedure for carrying out atransition test for a connection state of a mobile communicationterminal of a cellular system, and which outputs control informationincluding time setting information in accordance with the procedure; atransmission/reception unit which, in accordance with the controlinformation from the test procedure control unit, generates a pluralityof test signals including predetermined messages corresponding to aplurality of cells in the cellular system, and which varies theplurality of test signals in accordance with a scheduled time passage tothereby transmit the signals to the mobile communication terminal andreceive response signals including predetermined messages from themobile communication terminal; a reception measurement unit whichmeasures time domain waveforms of the response signals including thepredetermined messages from the mobile communication terminal; a messagelog acquiring unit which acquires and stores messages andradio-communication time information when the transmission/receptionunit and the mobile communication terminal exchange the respectivepredetermined messages; a display unit which displays measured resultsof the time domain waveforms from the reception measurement unit and theradio-communication time information from the message log acquiringunit; and a display control unit which carries out processing forreceiving the measured results of the time domain waveforms from thereception measurement unit and the radio-communication time informationfrom the message log acquiring unit, and for causing to display graphsindicating the measured results of the time domain waveforms and apredetermined number of radio-communication markers indicating points inradio-communication time which correspond to the radio-communicationtime information by a graphic display capable of simultaneouslycomparing at both sides of the same time base on the display unit. 2.The test system for a mobile communication terminal, according to claim1, wherein the display control unit has: a coordinate generating unitwhich divides a display screen of the display unit into at least a firstregion and a second region, and which causes to display a firstcoordinate where the abscissa is time and the ordinate is power level atthe first region, and causes to display a second coordinate where theabscissa is a time base which is the same as the abscissa of the firstcoordinate and the ordinate is positions of the mobile communicationterminal and the plurality of cells at the second region; a data displaycontrol unit which causes to display the graphs indicating the measuredresults of the time domain waveforms at the first coordinate displayedby means of the coordinate generating unit; and a radio-communicationmarker generating unit which causes to display a predetermined number ofradio-communication markers indicating points in radio-communicationtime which correspond to the radio-communication time information alongthe abscissa which is a time base of the second coordinate displayed bymeans of the coordinate generating unit.
 3. The test system for a mobilecommunication terminal, according to claim 2, wherein theradio-communication marker generating unit, as the predetermined numberof radio-communication markers, between the mobile communicationterminal and respective positions of the plurality of cells on theordinate in the second coordinate, causes to display capable ofrecognizing at least one of down radio-communication from the mobilecommunication terminal to one of the cells and up radio-communicationfrom one of the cells to the mobile communication terminal, and capableof recognizing the points in radio-communication time which correspondto the radio-communication time information along the abscissa which isa time base of the second coordinate.
 4. The test system for a mobilecommunication terminal, according to claim 2, wherein the receptionmeasurement unit has a function of measuring a transition time that, inaccordance with a response signal from the mobile communicationterminal, until it is switched from a state in which the mobilecommunication terminal receives a first test signal showing a greaterstrength at a current point in time among the plurality of test signalsto a state in which the mobile communication terminal receives a secondtest signal having a second greater strength among the plurality of testsignals accompanying that the plurality of test signals are varied to besuccessively made to be a greater strength in accordance with thescheduled time passage, the test system for a mobile communicationterminal further comprises a determining unit which, upon receiving themeasured results of the transition time from the reception measurementunit, carries out success/failure determination as to whether atransition has been a success or a failure in which the mobilecommunication terminal switches from a state of receiving the first testsignal to a state of receiving the second test signal among theplurality of test signals corresponding to the plurality of cells inaccordance with the control information from the test procedure controlunit, and the data display control unit causes to display capable ofrecognizing a success/failure as a result of the success/failuredetermination by the determining unit together with a correspondingradio-communication marker among the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit.
 5. The test system for amobile communication terminal, according to claim 2, wherein the datadisplay control unit causes to display capable of recognizing statesfrom a start up to a time of responding at a point in time when ascheduled response is completed, accompanying a display of thecorresponding radio-communication marker among the predetermined numberof radio-communication markers displayed by means of theradio-communication marker generating unit, at least one of the firstand second coordinates along the abscissa which is a time base of thefirst and second coordinates displayed by means of the coordinategenerating unit.
 6. The test system for a mobile communication terminal,according to claim 2, wherein the message log acquiring unit comprises astorage unit which acquires and analyzes message information when thetransmission/reception unit and the mobile communication terminalexchange the respective predetermined messages, thereby storing at leasta part of or a text of the message information so as to be read, and thedisplay control unit has: a designation marker generating unit whichgenerates a designation marker that moves in accordance with a selectivedesignation of an operator along the abscissa which is a time base ofthe second coordinate displayed by means of the coordinate generatingunit, and causes to display at least one of the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit; and a message displaycontrol unit which, when a specific radio-communication marker among thepredetermined number of radio-communication markers is designated by thedesignation marker displayed by means of the designation markergenerating unit, reads out at least a part of or a text of messageinformation corresponding to the specific radio-communication markerfrom the storage unit of the message acquiring unit and causes todisplay it on the display unit.
 7. The test system for a mobilecommunication terminal, according to claim 1, wherein the receptionmeasurement unit includes a spectrum analyzer having a function ofanalyzing and measuring a response signal from the mobile communicationterminal at a time domain.
 8. The test system for a mobile communicationterminal, according to claim 2, wherein the test procedure control unithas a computer and computer readable program code means for causing thecomputer to carry out a transition test for a connection state of themobile communication terminal of the cellular system, and outputscontrol information including time setting information in accordancewith the computer readable program code means.
 9. The test system for amobile communication terminal, according to claim 8, wherein thedetermining unit, the message log acquiring unit, and the displaycontrol unit are organized together with the test procedure control unitas software of the computer.
 10. The test system for a mobilecommunication terminal, according to claim 9, wherein the computerreadable program code means has: first computer readable program codemeans for causing the transmission/reception unit to generate aplurality of test signals including predetermined messages correspondingto a plurality of cells in the cellular system in accordance with thecontrol information from the test procedure control unit, and to varythe plurality of test signals in accordance with a scheduled timepassage to thereby transmit the signals to the mobile communicationterminal and receive response signals including the predeterminedmessages from the mobile communication terminal; second computerreadable program code means for causing the reception measurement unitto measure time domain waveforms of the response signals including thepredetermined messages from the mobile communication terminal; thirdcomputer readable program code means for causing the message logacquiring unit to acquire and store messages and the radio-communicationtime information when the transmission/reception unit and the mobilecommunication terminal exchange the respective predetermined messages;fourth computer readable program code means for causing the display unitto display measured results of the time domain waveforms from thereception measurement unit and the radio-communication time informationfrom the message log acquiring unit; and fifth computer readable programcode means for causing the display control unit to carry out processingfor receiving the measured results of the time domain waveforms from thereception measurement unit and the radio-communication time informationfrom the message log acquiring unit, and to display graphs indicatingthe measured results of the time domain waveforms and a predeterminednumber of radio-communication markers indicating points inradio-communication time which correspond to the radio-communicationtime information by a graphic display capable of simultaneouslycomparing at both sides on the same time base on the display unit. 11.The test system for a mobile communication terminal, according to claim10, wherein the computer readable program code means further has: sixthcomputer readable program code means for causing the coordinategenerating unit to divide a display screen of the display unit into atleast a first region and a second region, and to display a firstcoordinate where the abscissa is time and the ordinate is power level onthe first region, and a second coordinate where the abscissa is a timebase which is the same as the abscissa of the first coordinate and theordinate is respective positions of the mobile communication terminaland the plurality of cells on the second region; seventh computerreadable program code means for causing the data display control unit todisplay the graphs indicating the measured results of the time domainwaveforms at the first coordinate displayed by means of the coordinategenerating unit; and eighth computer readable program code means forcausing the radio-communication marker generating unit to display thepredetermined number of radio-communication markers indicating points inradio-communication time which correspond to the radio-communicationtime information along the abscissa which is a time base of the secondcoordinate displayed by means of the coordinate generating unit.
 12. Thetest system for a mobile communication terminal, according to claim 11,wherein the computer readable program code means further has: ninthcomputer readable program code means for causing the radio-communicationmarker generating unit to display, as the predetermined number ofradio-communication markers, between the respective positions of themobile communication terminal and the plurality of cells at the secondcoordinate, capable of recognizing at least one of downradio-communication from the mobile communication terminal to one of thecells and up radio-communication from one of the cells to the mobilecommunication terminal, and capable of recognizing the points inradio-communication time which correspond to the radio-communicationtime information along the abscissa which is a time base of the secondcoordinate.
 13. The test system for a mobile communication terminal,according to claim 12, wherein the computer readable program code meansfurther has: tenth computer readable program code means for causing thereception measurement unit to, in accordance with a response signal fromthe mobile communication terminal, measure a transition time that untilit is switched from a state in which the mobile communication terminalreceives a first test signal showing a greater strength at a currentpoint in time among the plurality of test signals to a state in whichthe mobile communication terminal receives a second test signal having asecond greater strength among the plurality of test signals accompanyingthat the plurality of test signals are varied to be successively made tobe a greater strength in accordance with the scheduled time passage;eleventh computer readable program code means for causing a determiningunit to, upon receiving the measured results of the transition time fromthe reception measurement unit, carry out success/failure determinationas to whether a transition has been a success or a failure in which themobile communication terminal is switched from a state of receiving thefirst test signal among the plurality of test signals corresponding tothe plurality of cells to a state of receiving the second test signal inaccordance with the control information from the test procedure controlunit; and twelfth computer readable program code means for causing thedata display control unit to display capable of recognizing asuccess/failure as a result of the success/failure determination by thedetermining unit together with a corresponding radio-communicationmarker among the predetermined number of radio-communication markersdisplayed by means of the radio-communication marker generating unit.14. The test system for a mobile communication terminal, according toclaim 13, wherein the computer readable program code means further has:thirteenth computer readable program code means for causing the datadisplay control unit to display capable of recognizing states from astart up to a time of responding at a point in time when a scheduledresponse is completed, accompanying the display of a correspondingradio-communication marker among the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit, at least one of the firstand second coordinates along the abscissa which is a time base of thefirst and second coordinates displayed by means of the coordinategenerating unit.
 15. The test system for a mobile communicationterminal, according to claim 14, wherein the computer readable programcode means further has fourteenth computer readable program code meansfor causing the storage unit of the message log acquiring unit toacquire and analyze message information when the transmission/receptionunit and the mobile communication terminal exchange the respectivepredetermined messages, thereby storing at least a part of or a text ofthe message information to be read.
 16. The test system for a mobilecommunication terminal, according to claim 15, wherein the computerreadable program code means further has: fifteenth computer readableprogram code means for causing the designation marker generating unit ofthe display control unit to move in accordance with a selectivedesignation by an operator along the abscissa which is a time base ofthe second coordinate displayed by means of the coordinate generatingunit, and generate a designation marker identifying at least one of thepredetermined number of radio-communication markers displayed by meansof the radio-communication marker generating unit to be designated; andsixteenth computer readable program code means for causing the messagedisplay control unit of the display control unit to, when a specificradio-communication marker among the predetermined number ofradio-communication markers is designated by the designation markerdisplayed by means of the designation marker generating unit, read outat least a part of or a text of the message information corresponding tothe specific radio-communication marker from the message acquiring unit,and to display it on the display unit.
 17. A test method for a mobilecommunication terminal, comprising: a step of preparing a test procedurecontrol unit which possesses a procedure for carrying out a transitiontest for a connection state of a mobile communication terminal of acellular system, and outputting control information including timesetting information in accordance with the procedure from the testprocedure control unit; a step of preparing a transmission/receptionunit, and in accordance with the control information from the testprocedure control unit, generating a plurality of test signals includingpredetermined messages corresponding to a plurality of cells in thecellular system, and varying the plurality of test signals in accordancewith a scheduled time passage to thereby transmit the signals to themobile communication terminal and receive a response signal including apredetermined message from the mobile communication terminal in thetransmission/reception unit; a step of preparing a reception measurementunit, and measuring a time domain waveform of the response signalincluding the predetermined message from the mobile communicationterminal in the reception measurement unit; a step of preparing amessage log acquiring unit, and acquiring and storing messages andradio-communication time information when the transmission/receptionunit and the mobile communication terminal exchange respective messagesby means of the message log acquiring unit; a step of preparing adisplay unit, and displaying measured results of the time domainwaveforms from the reception measurement unit, and theradio-communication time information from the message log acquiring uniton the display unit; and a step of preparing a display control unit, andcarrying out processing for receiving the measured results of the timedomain waveforms from the reception measurement unit and theradio-communication time information from the message log acquiringunit, and for causing to display graphs indicating the measured resultsof the time domain waveforms and a predetermined number ofradio-communication markers indicating points in radio-communicationtime which correspond to the radio-communication time information by agraphic display capable of simultaneously comparing at both sides of thesame time base on the display unit by means of the display control unit.18. The test method for a mobile communication terminal, according toclaim 17, wherein the test procedure control unit has a computer andcomputer readable program code means for causing the computer to carryout a transition test for a connection state of the mobile communicationterminal of the cellular system, and outputs control informationincluding time setting information in accordance with the computerreadable program code means.
 19. The test method for a mobilecommunication terminal, according to claim 18, wherein the message logacquiring unit and the display control unit are organized together withthe test procedure control unit as software of the computer.
 20. Thetest method for a mobile communication terminal, according to claim 19,wherein the computer readable program code means has: first computerreadable program code means for causing the transmission/reception unitto, in accordance with the control information from the test procedurecontrol unit, generate a plurality of test signals includingpredetermined messages corresponding to the plurality of cells in thecellular system, and vary the plurality of test signals in accordancewith a scheduled time passage to thereby transmit the signals to themobile communication terminal and receive response signals including thepredetermined messages from the mobile communication terminal; secondcomputer readable program code means for causing the receptionmeasurement unit to measure time domain waveforms of the responsesignals including the predetermined messages from the mobilecommunication terminal; third computer readable program code means forcausing the message log acquiring unit to acquire and store messages andradio-communication time information when the transmission/receptionunit and the mobile communication terminal exchange the respectivepredetermined messages; fourth computer readable program code means forcausing the display unit to display measured results of the time domainwaveforms from the reception measurement unit and theradio-communication time information from the message log acquiringunit; and fifth computer readable program code means for causing thedisplay control unit to carry out processing for receiving the measuredresults of the time domain waveforms from the reception measurement unitand the radio-communication time information from the message logacquiring unit, and for causing to display graphs indicating themeasured results of the time domain waveforms and a predetermined numberof radio-communication markers indicating points in radio-communicationtime which correspond to the radio-communication time information by agraphic display capable of simultaneously comparing at both sides on thesame time base on the display unit.
 21. The test method for a mobilecommunication terminal, according to claim 20, wherein the computerreadable program code means further has: sixth computer readable programcode means for causing a coordinate generating unit of the displaycontrol unit to divide a display screen of the display unit into atleast a first region and a second region, and to display a firstcoordinate where the abscissa is time and the ordinate is power level onthe first region, and a second coordinate where the abscissa is a timebase which is the same as the abscissa of the first coordinate and theordinate is respective positions of the mobile communication terminaland the plurality of cells on the second region; seventh computerreadable program code means for causing a data display control unit ofthe display control unit to display graphs indicating the measuredresults of the time domain waveforms at the first coordinate displayedby means of the coordinate generating unit; and eighth computer readableprogram code means for causing a radio-communication marker generatingunit of the display control unit to display a predetermined number ofradio-communication markers indicating points in radio-communicationtime which correspond to the radio-communication time information alongthe abscissa which is a time base of the second coordinate displayed bymeans of the coordinate generating unit.
 22. The test method for amobile communication terminal, according to claim 21, wherein thecomputer readable program code means further has: ninth computerreadable program code means for causing the radio-communication markergenerating unit of the display control unit to display capable ofrecognizing, as the predetermined number of radio-communication markers,between the respective positions of the mobile communication terminaland the plurality of cells on the ordinate at the second coordinate, atleast one of down radio-communication from the mobile communicationterminal to one of the cells and up radio-communication from one of thecells to the mobile communication terminal, and capable of recognizingthe points in radio-communication time which correspond to theradio-communication time information along the abscissa which is a timebase of the second coordinate.
 23. The test method for a mobilecommunication terminal, according to claim 22, wherein the computerreadable program code means further has: tenth computer readable programcode means for causing the reception measurement unit to, in accordancewith the response signals from the mobile communication terminal,measure a transition time that until it is switched from a state inwhich the mobile communication terminal receives a first test signalshowing a greater strength at a current point in time among theplurality of test signals to a state in which the mobile communicationterminal receives a second test signal having a second greater strengthamong the plurality of test signals accompanying that the plurality oftest signals are varied to be successively made to be a greater strengthin accordance with the scheduled time passage; eleventh computerreadable program code means for causing the determining unit to, uponreceiving the measured results of the transition time from the receptionmeasurement unit, carry out success/failure determination as to whethera transition has been a success or a failure in which the mobilecommunication terminal is switched from a state of receiving the firsttest signal among the plurality of test signals corresponding to theplurality of cells to a state of receiving the second test signal inaccordance with the control information from the test procedure controlunit; and twelfth computer readable program code means for causing thedata display control unit of the display control unit to display capableof recognizing a success/failure as the result of the success/failuredetermination by the determining unit together with a correspondingradio-communication marker among the predetermined number ofradio-communication markers displayed by means of theradio-communication marker generating unit.
 24. The test method for amobile communication terminal, according to claim 23, wherein thecomputer readable program code means further has: thirteenth computerreadable program code means for causing the data display control unit todisplay capable of recognizing states from a start up to a time ofresponding at a point in time when a scheduled response is completed,accompanying the display of a corresponding radio-communication markeramong the predetermined number of radio-communication markers displayedby means of the radio-communication marker generating unit, at least oneof the first and second coordinates along the abscissa which is a timebase of the first and second coordinates displayed by means of thecoordinate generating unit.
 25. The test method for a mobilecommunication terminal, according to claim 24, wherein the computerreadable program code means further has: fourteenth computer readableprogram code means for causing the storage unit of the message logacquiring unit to acquire and analyze message information when thetransmission/reception unit and the mobile communication terminalexchange the respective predetermined messages, thereby storing at leasta part of or a text of the message information to be read.
 26. The testmethod for a mobile communication terminal, according to claim 25,wherein the computer readable program code means further has: fifteenthcomputer readable program code means for causing the designation markergenerating unit of the display control unit to move in accordance with aselective designation by an operator along the abscissa which is a timebase of the second coordinate displayed by means of the coordinategenerating unit, and to generate a designation marker identifying atleast one of the predetermined number of radio-communication markersdisplayed by means of the radio-communication marker generating unit tobe designated; and sixteenth computer readable program code means forcausing the message display control unit of the display control unit to,when a specific radio-communication marker among the predeterminednumber of radio-communication markers is designated by the designationmarker displayed by the designation marker generating unit, read out atleast a part of or a text of the message information corresponding tothe specific radio-communication marker from the message acquiring unit,and to display it on the display unit.